Just got our new four stall barn built. I use wood shavings in them.
My horses do not stay stalled for long periods of time; only when it is rainy or soggy.
No matter how many bags of shavings I lay down the middle of two of the stalls always seems to become muddy after a few hours of them staying in it.
(There is dirt floor under the shavings.)
I don't think I can afford stall mats at the moment as they seem to be rather pricey. (I will probably go with this option a few months down the road though)
Any advice or input would be appreciated.